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A waveguide duplexer

A duplexer and waveguide technology, which is applied in the field of waveguide duplexers, can solve the problems of duplexer size and interface requirements contradiction, less resonators, etc., to simplify processing and assembly processes, improve isolation, and reduce structural size Effect

Active Publication Date: 2016-03-30
XIAN INSTITUE OF SPACE RADIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The generalized Chebyshev prototype introduces a transmission zero so that fewer resonators are required to meet the same out-of-band suppression condition. However, how to realize the transmission zero in the waveguide system is a difficult point because of the specific topology and coupling polarity. Requirements often conflict with diplexer size and interface requirements

Method used

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Embodiment

[0022] A waveguide duplexer, including a cavity and a cover plate, the cover plate covers the cavity and is fixedly connected with the cavity;

[0023] Such as figure 1 As shown, the cavity includes a common terminal T-junction 1 and two channel filters, and the two channel filters are symmetrically distributed at both ends of the common terminal T-junction 1; the two channel filters are the left channel filter filter and right channel filter;

[0024] The left channel filter includes a left first resonator 2, a left second resonator 3, a left third resonator 4 and a left fourth resonator 5 from the common end T-junction 1 to the outside;

[0025] The right channel filter includes the first right resonator 2 ′, the second right resonator 3 ′, the third right resonator 4 ′ and the fourth right resonator 5 from the common end T-junction 1 to the outside. ';

[0026] The left first resonator 2, the left fourth resonator 5, the right first resonator 2' and the right fourth reso...

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Abstract

The invention relates to a waveguide duplexer, and belongs to the technical field of electronics. A parasitic mode of a resonator is used as a non-transmission node of the waveguide duplexer, a transmission zero is generated out of a band of a path filter by controlling multipath effect of coupling of a dominant mode and another dominant mode and coupling of the dominant modes and the parasitic mode, and therefore the isolation of the duplexer is improved. Meanwhile, the implementation mode of the transmission zero of the type does not need cross coupling, the structural size of the duplexer can be reduced, and the processing and assembling process can be simplified.

Description

technical field [0001] The invention relates to a waveguide duplexer, which belongs to the technical field of electronics. Background technique [0002] Waveguide duplexers are key components of microwave systems. With the development of communication systems in recent years, the requirements for duplexers are getting higher and higher, and it is required to meet the indicators of high isolation and low insertion loss under the constraints of given size and interface requirements. The generalized Chebyshev prototype introduces a transmission zero so that fewer resonators are required to meet the same out-of-band suppression condition. However, how to realize the transmission zero in the waveguide system is a difficult point because of the specific topology and coupling polarity. Requirements often conflict with diplexer size and interface requirements. This patent provides a new type of duplexer implementation, which does not require cross-coupling, and generates transmiss...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/20
Inventor 杨毅民张能林浩佳段斌许飞
Owner XIAN INSTITUE OF SPACE RADIO TECH
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